Title (de)

Title (fr)

Publication

Application

Priority

JP 9801011 W 19980311

JP 7456997 A 19970311

JP 7457197 A 19970311

Abstract (en)

A process for producing a purified conjugated diene, comprising a step of isolating a conjugated diene from a petroleum fraction containing the conjugated diene by extractive distillation, the step comprising: (1) using an amide compound as an extraction solvent, (2) feeding the extraction solvent to an extractive distillation column, said extraction solvent having been adjusted in such a manner that water is present within a range of 50 to 1,000 ppm based on the extraction solvent, and (3) subjecting the petroleum fraction to extractive distillation within the extractive distillation column.